CVE-2026-80117 PassMark PerformanceTest, BurnInTest, and OSForensics Arbitrary I/O Port Access via DirectIo64.sys
Local attackers can escalate privileges or crash the system by accessing arbitrary I/O ports via a vulnerable driver in PassMark utilities.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-80117?
CVE-2026-80117 is a medium-severity vulnerability in PassMark Software BurnInTest, published on 4 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
PassMark PerformanceTest before 11.1 build 1012, BurnInTest before 11.1 build 1000, and OSForensics before 11.1 build 1016 contain a privilege escalation vulnerability in DirectIo64.sys that allows local users to issue arbitrary IN and OUT instructions to any x86 I/O port due to missing allowlist or port validation on exposed IOCTLs. Attackers can obtain a device handle and write to sensitive ports including the PS/2 controller port, CPU reset ports, CMOS configuration ports, and interrupt controller ports to cause an immediate system reset or other hardware-level manipulation from a standard user account.
Weakness: CWE-782
Which versions are affected by CVE-2026-80117?
How do I fix CVE-2026-80117?
No fix has been published for CVE-2026-80117 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-80117 being exploited?
There is no known exploitation of CVE-2026-80117 in the wild and no public exploit code.
Sources
Also known as GHSA-p6jp-vch5-mc54.